high7.8
CVE-2026-55011
Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.
Impact
Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Malware Protection Engine | before 1.1.26060.3008 |
| Microsoft | Microsoft Malware Protection Engine | from 1.1.0.0 before 1.1.26060.3008 |